<?php
// +----------------------------------------------------------------------
// | SentCMS [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2013 http://www.tensent.cn All rights reserved.
// +----------------------------------------------------------------------
// | Author: molong <molong@tensent.cn> <http://www.tensent.cn>
// +----------------------------------------------------------------------

namespace app\middleware;
use think\Response;

class Validate {

	/**
	 * @param \think\Request $request
	 * @param \Closure $next
	 * @return mixed|\think\response\Json
	 */
	public function handle($request, \Closure $next) {
		//获取当前参数
		$params = $request->param();
		//获取访问控制器
		$controller = strtr(strtolower($request->controller()), '.', '\\');
		//获取操作名,用于验证场景scene
		$scene    = $request->action();
		$validate = "app\\validate\\" . $controller;
		//仅当验证器存在时 进行校验
		if (class_exists($validate)) {
			$v = new $validate;
			//仅当存在验证场景才校验
			if ($v->hasScene($scene)) {
				//设置当前验证场景
				$v->scene($scene);
				if (!$v->check($params)) {
					//校验不通过则直接返回错误信息
					$data = array(
						'msg'  => $v->getError(),
						'code' => 1,
						'data' => '',
						'time' => time(),
					);
					return Response::create($data, 'json', 200);
				}
			}
		}
		return $next($request);
	}
}